Pumping device



April 2, 1929. w. s. BLACK PUMPING DEVICE Filed Feb. 2, 1927 Ww m Patented Apr. 2, 1929.

UNITED STATES WILLIAM SUMTEB BLACK, F NORWALK, CALIFORNIA.

PUMPING nevica Application mea February 2, 1927. serial no. 165,338.

This invention relates to deep well apparatus, oil, artesian or the like, and it is an object of my invention to provide a device attachable to the walking beam of an oil well pumping apparatus, and which will insure at all times that a. vert-ical, even stroke is applied to the sucker-rod.

A second object of my invention is to provide a device which may be attached t0 any walking beam, which is easy to manufacture, is not likely to get out of order, and which is well adapted to perform the services required of it.

lVith the foregoing and other objects in view which will be made manifest in the following detailed description andV specifically pointed out in the appended claims, reference is had to the accompanying drawings for an illustrative embodiment of the invention,

wherein:

Figure l is a side elevation showing a walking beam having my improved pumping device attached thereto, showing the same in assembled .relation and in actual operation.

Figure 2 is a plan view of the showing in Figure 1. c

Figure 3' isa view of a portion of my device, and

Figure 4 is an end view of the illustration shown' in Figure 3. Y

Referring to the accompanying drawings wherein similar reference characters designate similar parts throughout, the reference numeral 1 designates as an en-' tirety the supporting structure of a walking beam in a deep well oil apparatus. This walking beam is designated at 2. A suitable bull wheel is indicated at 3 having a supporting structure 4 and a crank arm 5, to which arm is ypivoted, as at6, the conventional type of pitman 7. A sucker rod is indicated at 8 and the oil well casing is shown in part at 9. These parts thus far referred to are conventional in form and no claim what-- soever is made as to their novelty. My preferred pumping device is used in connection with these parts and comprises a skeleton frame work designated as an entirety at 10. This frame work is formed of heavy durable material, such as steel or the like, and comprises the frames 11 and 12 respectively, which frames are in spaced parallel relationship and are preferably identical'lin construction when the nature of the walking beam and supporting structure permits of the same.

Each of these frames 1l and 12 comprises radial bars 13, 14, 15 and 16, respectively, which radial bars are connected at their outer end by a pair of arcuate rods 30 and 31. These arcuate Vrods are provided with spacing bars 32 which rigidly hold the same in spaced parallel relation. A plurality of rollers (in this case 6 are shown) are pivotally supported between the two radial arcuate bars. The rollers are arranged in vertical alignment and have their centers of rotation arranged u n an are having a center curvature coinci ent with `the center of oscillation of the walking beam. The frames 11 and 12 may be secured tothe walking beam in-any desired manner. y'l0 Bolts or the like Vmay be passed through them and through the walking beam or each frame may be separately .nailed tothe side of the walking beam. This frame work will adapt itself to various types of walking beams and minor details in the construction of the same may be resorted toin order to enable the same to adequately fit the needs of each particular type of walking beam employed.

A curved track 35 extends from a point 80 adjacent the pivoted point of the walking beam outwardly and downwardly to a point substantially below the outer end'of the Walking beam. This curved track ma be fastened by means of the braces 36, 3 and 38, V85 to the frame Werk or supporting structure of the walking beam or -to convenient stationary objects located near by. No particular claim is made to the bracing structure of this curved track as it is only necessary that the same'be 9o rigidly supported in its proper sition with respect to the walking beam an the remainder of the oil well apparatus.

The upper radial links 16 are prov'idedvwith enlargements or widened portions 40 between 95 which portions is pivoted a suitable pulley 41 or the like and this pulley is adapted to have extend over the same a cable 42, on one end of Vwhich there is provided a clamp 43 for attachment to the arcuatetrack 35 and 100 on the other end of the ysame means are rovided for attachment to the up r end o the sucker rod. The clamp 43 is a apted to have its position along the arcuate track 35 varied so that a different depth of stroke may be imparted to the sucker rod without varying the stroke of the walking beam.

A suitable plate 45 is attached to the upper end of the sucker rod and is held in place by the nut 46. This plate is lar er in cross section than the upper end of te casing 9. A secondk plate 47 is attached to the casing at a point below its upper end and aheavy coiled spring 50 is disposed around the casing and centered thereby, extending a slight distance above the top `of the casing. Should at any time dui-ing the operation of the device the cable or flexible member l2 break, due to wear Y or excess tensile stress, the plate 45 will be caught upon the coiled spring 5() and the entire sucke rod will be prevented from droppingwithinthe well. v

The stroke of the sucker rod may be varied by adjusting the position of the clamp 43 upon the track 35. It will be noted that the upper end et the track 3.5 is very closeto the pivot point oil the walking beam, while the lower end ot the track is almost vertically beneath the pulley 41. It the clamp i3 is Ytastened to the track near its upper end,the

portion ot the cable between the pulley l1 and the clamp will be practically parallel to the walking beam.v Consequently, during the oscillation ofthe walking beam, thisrportion ot the cable will merely oscillate with the walking beam and the stroke imparted to the sucker rod will beequal in lengthito the vertical. distance throi'igh which the pulley l1 passes. By shifting the clamp 43. to the bottom of the arcuate track, the portion of the cable between the pulley l1 and the clamp 43 will be practically perpendicular to the walkingbeam so Athat as the end ot the walking beam having` the pulley Ll1 rises, it will cause the sucker rod to be lifted twice as high as the pulley 41 will be litted. In this manner the length oit stroke of the sucker rod can be varied some distance equal to the vertical distance through which the pulley 41 passes to a stroke which is twice this amount.` Any intermediate length can be obtained by adjusting the clamp i3 along the intermediate portions ot' the track 35, and it desired, the track can be calibrated for various lengths of stroke. As the rollers lhave their centers of rotation on an are having a center curvature coincident with the center of oscillation ot the walking beam, onevioller will always be in engagement with that portion of the cable which is between the pulley l1 and the sucker ro'd and vertically above the sucker rod so that the portion ot the cable which is disengaged and below the mentioned roller will almost han g vertically in alignment with the sucker rod. In this manner no lateralthrusts will be in'iparted to the sucker rod due to the swinging of the walkin g beam.

I do not desire to limit myself to the exact arrangement ot parts clearly illustated in Fig.A 1 of the drawings, as kI contemplate changing the design oit myi'rame work to adapt itselt` to various types of walking beams. Although 'itwill at all times be necessary to provide the arcuate rods 30 in such va position that they will perform the function of holding the sucker rod. in a vertical position, I contemplate employing various means for thus holding the same in position, I may dispense entirely with the radial rods 13, 14, 15 and 16, and employ in their place other braces attachable to points moi'e remote on the walking beam. I may, should I so desire, provide additional braces tor the arcuate track 35.

Various changes may be made in the details of construction by those skilled in the art without departing from the spirit of my invention, as claimed.

I claim 1. A pumping device :tor oil wells comprising a pair of trames having an aieuate contour, said frames having radial arms attachable to a walking beam, pulleys on said arcuate contour, a drum on a pair ot said arcuate rods, a coi'd extending over said drinn and resting on said pulleys, said cord having one end attached to a sucker rod and means for attaching the other end of said cord at ditiercnt positions with respect to said walking beam. Y,

2. A pumping device for oil wells comprising a pair of frames,a drum mounted between said frames and having a flexible meinber inserted .ther-cover, pulleys mounted betweeirsaid frames, said flexible member being slidable onsaid pulleys, one end ot said flexible member being attached to a sucker rod and the other end of said flexible member having a clamp thereon, a stationary arcuate track and means for attaching said clamp to said track adjustably.

3. The combination with a walking beam having a support of a pumping device, said pumping device comprising a pair of spaced arcuate rods rigidly attached to said walking beam, pulleys extending between said rods, a drum operatively mounted on the walking beam adjacent said pulleys, a flexible member extending over said drinn and sliding on said pulleys, an arcuate track attached tothe support for said walking beam, said liexible member being attached at one end to a sucker rod, the other end of said cord being provided with ,a clamp adjustably mounted on said track.v

4. The combination with a walking beam having a support of a pumping device, said pumping device comprising a pair of arms, a pair ot acuate rods attached to said arms, said rods having mountedl tlierebetweena plurality of pulleys, a drum attached operatively to the walking beam, a cord extending over said drum having one en d attached to a sucker rod and means for attaching the other end ot' said cord to stationary points whereby the stroke of said sucker rod maybe varied.

5. A pumping device for wells including a walking beam, a pulley mounted upon the walking beam, flexible means adapted to be connected to a sucker rod and extended over the pulley to an adjacent object, and means permitting variation of the position of the portion of the flexible means between the pulley and the obj ect with respect to the vertical, so as to vary the length of stroke imparted to the sucker rod.

6. A pumping device for wells comprising a walking beam, a pulley mounted for rotation upon the walking beam, a guide mounted adjacent the walking beam, a. flexible element adapted to suspend a sucker rod extending over the pulley, and means connectingl the flexible element to the guide permitting the flexible element to be connected at various points along' the guide so as to vary the position of that portion of the flexible element between the pulley and guide with respect to thevertical and thus vary the length of the stroke imparted to the sucker rod.

7. A pumping device for wells including a walking beam, a pulley mounted upon the walking beam, flexible means adapted to be connected to asucker rod and extended over the pulley and secured to an adjacent object,

and means whereby the portion of the flexible means between the pulley and object may have its position varied so as to vary the angle which the mentioned portion of the flexible element forms with the walking beam in any given position and thus vary the length of stroke of the sucker rod.

8. A pumping device for wells including a walking beam, a pulley mounted upon the walking beam, flexible means adapted to be connected to a sucker rod having a first portion extending from the sucker rod to the pulley, and a second portion extending from over the pulley to an adjacent object, and means for varying the position of at least a part of the second portion of the flexible means with respect to the vertical so as to vary .the length of the stroke imparted to the sucker rod.

In testimony whereof I have signed my name to this specification.

W. SUMTER BLACK. 

